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Home > CC2 > Chapter 9 > Lesson 9.2.1 > Problem 9-59

9-59.

Find the area and circumference of a circle with a radius of 7 cm. Homework Help ✎

Area of a circle = r2 π
Circumference = 2πr

Substitute 7 for r in each equation.

The area is approximately 153.9 cm2. What is the perimeter?